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| Actinoptychus senarius var. barbadensis (A. Schmidt) Desikachary & Sreelatha 1989 |
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| Neohuttonia tripartita (Barker & Meakin) Desikachary & Sreelatha 1989 |
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| Neohuttonia reedii (Bone & Gosden) Desikachary & Sreelatha 1989 |
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| Drepanotheca bivittata var. elongata (Brun) Desikachary & Sreelatha 1989 |
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| Trigonium inelegans var. tubulosa (Brun) Desikachary & Sreelatha 1989 |
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| Diploneis aestica var. oamaruensis (Cleve) Desikachary & Sreelatha 1989 |
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| Navicula inexacta var. symmetrica (Cleve) Desikachary & Sreelatha 1989 |
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| Trigonium gallapagense (Cleve) Desikachary & Sreelatha 1989 |
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| Stephanopyxis monstrosa (Forti) Desikachary & Sreelatha 1989 |
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| Mastogloia lamprosticta (Gregory) Desikachary & Sreelatha 1989 |
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| Trigonium formosum f. quadrangularis (Greville) Desikachary & Sreelatha 1989 |
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| Trigonium lineatum (Greville) Desikachary & Sreelatha 1989 |
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| Hyalodiscus franklinii var. robusta (Grove & Sturt) Desikachary & Sreelatha 1989 |
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| Neohuttonia reversa (Grove & Sturt) Desikachary & Sreelatha 1989 |
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| Trigonium arcticum var. quadrata (Grunow ex Tempère & Peragallo) Desikachary & Sreelatha 1989 |
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| Rattrayella simbirskianus (Grunow in A. Schmidt) Desikachary & Sreelatha 1989 |
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| Trigonium arcticum var. japonica (Grunow in Schmidt) Desikachary & Sreelatha 1989 |
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| Trigonium inelegans var. micropora (Grunow in Van Heurck) Desikachary & Sreelatha 1989 |
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| Trigonium lineatum f. biangulata (Laporte & Lefebure) Desikachary & Sreelatha 1989 |
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| Hyalodiscus dubiosus var. curvans (Rattray) Desikachary & Sreelatha 1989 |
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